<template>
  <div :class="className" :style="{ height: height, width: width }" />
</template>

<script>
import echarts from "echarts";
require("echarts/theme/macarons"); // echarts theme
import resize from "./mixins/resize";
const animationDuration = 6000;
export default {
  mixins: [resize],
  props: {
    className: {
      type: String,
      default: "chart"
    },
    width: {
      type: String,
      default: "100%"
    },
    height: {
      type: String,
      default: "350px"
    },
    chartData: {
      type: Object
    }
  },
  watch: {
    chartData: {
      deep: true,
      handler(val) {
        this.setOptions(val);
      }
    }
  },
  data() {
    return {
      chart: null,
      seriesData: []
    };
  },
  mounted() {
    this.$nextTick(() => {
      this.initChart();
    });
  },
  beforeDestroy() {
    if (!this.chart) {
      return;
    }
    this.chart.dispose();
    this.chart = null;
  },
  methods: {
    initChart() {
      this.chart = echarts.init(this.$el, "macarons");
      this.setOptions(this.chartData);
    },
    setOptions({ newVisitis, xAxis, actualData, actual, title, yAxis } = {}) {
      var series = [];
      if (newVisitis != null || newVisitis != undefined) {
        for (var i = 0; i < newVisitis.length; i++) {
          series.push({
            name: actualData[i],
            type: "bar",
            data: newVisitis[i],
            smooth: true, //线条平滑
            //stack: 'vistors',
            animationDuration: 2800,
            animationEasing: "quadraticOut"
          });
        }
        series.push({
          name: "历史最优",
          type: "line",
          data: actual,
          smooth: true, //线条平滑
          animationDuration: 2800,
          animationEasing: "quadraticOut"
        });
      }
      this.chart.setOption({
        title: {
          text: title,
          x: "center",
          y: "top",
          textStyle: {
            color: "#333"
          }
        },
        tooltip: {
          trigger: "axis",
          axisPointer: {
            // 坐标轴指示器，坐标轴触发有效
            type: "shadow" // 默认为直线，可选为：'line' | 'shadow'
          }
        },
        grid: {
          top: 40,
          left: "2%",
          right: "2%",
          bottom: "3%",
          containLabel: true
        },
        legend: {
          data: ["本期值", "同期值", "历史最优"],
          left: "60%",
          textStyle: {
            color: "#fff"
          }
        },
        xAxis: [
          {
            type: "category",
            data: xAxis,
            axisTick: {
              alignWithLabel: true
            }
          }
        ],
        yAxis: [
          {
            name: yAxis,
            type: "value",
            nameTextStyle: {
              color: "#333"
            },
            axisLabel: {
              formatter: "{value}"
            },
            axisTick: {
              show: false
            }
          }
        ],
        series: series
      });
    }
  }
};
</script>
